Isaac n



UNITED STATES ISAAC N. DANN, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE-NE\\lV`\ 'PATENT OFFICE.

HAVEN FOLDING CHAIR COMPANY.

FOLDING CHAIR.

Specification forming part of Letters Patent No.. 52,4SS, dated February6, 1866.

To all whom it may concern:

Be it known that I, ISAAC N. DANN, of New Haven, in the county of NewHaven and State of Connecticut, have invented certain new and usefulImprovements in Folding Chairs; and I hereby declare that lthe followingis a full, clear, and eact description of the same,refer ence being hadto the accompanying drawings, which represent a perspective view of lnyimproved chair unfolded.

This invention relates to improvements in the manufacture of that classof folding chairs which are composed of cross-legs, the front legsextending upward and joined together at their ends by a cross-piece,forming the back of the chair, and the seat of which is formed by afiexible substance fastened to a front and back round secured,respectively, to the .rea-r and front legs.

The object of this invention is threefold First, to obtain a larger andmore convenient seat than is afforded by the folding chairs asordinarily constructed; second, to secure a strong and firm jointwithout reducing the strength of the two legs of the chair at theirpoint of junction; and,third, to give increased strength to the back ofthe chair at the point where it meets the back round of the seat.

In the folding chair of this pattern now in use the back round of theseat is straight, so that the person .sitting in the chair comes incontact with the round, part of his weight resting thereon, which cannotfail to be disagreeable. To obviate this is the object of the first partof my invention, which consists in bowing or curving the back round inthe plane of the seat, the eonvexity being back of the chair. By thismeans a larger and more coinmodious seat is obtained.

In the chair as usually constructed a round is inserted in the legs atthe point where they cross each other, forming the joint upon which thefolding of the chair is effected, and connecting the sides of the chair.In order that this round may be secured into the legs it is necessary tocut away so much from the center of each leg as is required for theinsertion of the wooden tenon. This, of course, materially .weakens thelegs of the chair. To remedy this is the object of the second part of myinvention, which consists in the use, in lieu of the'round, of tworivets uniting the contiguous legs on each side of the chair. Thuswhileanswering the same purpose as the wooden round they will preserve allthe strength needed.

It has also been usual in chairs of this class to place the back roundof the seat between the sides of the front legs, retaining the round inits place by inserting its end into mortises cut in the sides of thelegs. It is evident that this weakens the back of the chair and rendersit more liable to break when any pressure is brought to bear against it.To remedy this defect is the object of the third part of my invention,which consists in placing the back round of the seat in rear of insteadof between the two front legs, fastening the round to the legs by screwsor otherwise. It will be seen that my improvement not only adds to l thestrength of the back ofthe chair, but also materially increases thedepth of the seat.

To enable others skilled in the art to fully understand and construct myinvention, I will now proceed to describe it.

In the accompanying drawings, a a and b b are, respectively, the frontand back legs of the folding chair, which are fastened at the pointswhere they cross each other by the two rivets o c.

d is the bowed or curved back round of the seat, secured to the rear ofthe two front legs, c a', by means of screws or in any other suitablemanner. To the upper ends of the back legs, b b,the front round, e, issecured. A dexible substance of suitable material is fastened to thisfront round, e, and the back round, d, forming the seat ofthe chair. Thecross-piece j' connects the upper ends of the legs c a', and

in conjunction with them forms the back of the chair.

WhatI claim as my invention, and desire to secure by Letters Patent, is-

The use, in a folding chair of the character herein described, of acurved or bowed back round for the seat, whether the same be placedbetween or in rear of the front legs of the chair, as and for thepurposes herein set forth.

In testimony whereof I have signed my name to this specification beforetwo subscribing witnesses.

ISAAC N. DANN.

Y Witnesses R. FITZGERALD, E. F. MERRIGK.

